@trezor/utxo-lib/lib/vsize.js

Client-side Bitcoin-like JavaScript library

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getTransactionVbytes = exports.getTransactionVbytesFromAddresses = void 0;
const tslib_1 = require("tslib");
const BitcoinJsAddress = tslib_1.__importStar(require("./address"));
const address_1 = require("./address");
const coinselectUtils_1 = require("./coinselect/coinselectUtils");
const isKnownInputAddress = type => type in coinselectUtils_1.INPUT_SCRIPT_LENGTH;
const toVin = network => address => {
  const type = (0, address_1.getAddressType)(address, network);
  if (isKnownInputAddress(type)) {
    return {
      type,
      script: {
        length: coinselectUtils_1.INPUT_SCRIPT_LENGTH[type]
      }
    };
  }
  throw new Error(`Unknown input address '${address}'`);
};
const toVout = network => address => {
  let length;
  try {
    length = BitcoinJsAddress.toOutputScript(address, network).length;
  } catch {
    const msg = address.match(/^OP_RETURN (.*)$/)?.pop();
    if (msg) {
      length = msg.match(/^\(.*\)$/) ? msg.length : 2 + msg.length / 2;
    } else {
      length = 0;
    }
  }
  return {
    script: {
      length
    }
  };
};
const getTransactionVbytesFromAddresses = (inputs, outputs, network) => {
  const ins = inputs.map(toVin(network));
  const outs = outputs.map(toVout(network));
  return (0, coinselectUtils_1.transactionBytes)(ins, outs);
};
exports.getTransactionVbytesFromAddresses = getTransactionVbytesFromAddresses;
const getTransactionVbytes = ({
  vin,
  vout
}, network) => {
  const ins = vin.map(({
    addresses = []
  }) => addresses[0] ?? '');
  const outs = vout.map(({
    addresses = []
  }) => addresses[0] ?? '');
  return (0, exports.getTransactionVbytesFromAddresses)(ins, outs, network);
};
exports.getTransactionVbytes = getTransactionVbytes;
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